Max Korn [https://community.jboss.org/people/developer251] created the discussion "No-arg default constructor error when deploying Web Service" To view the discussion, visit: https://community.jboss.org/message/791939#791939 -------------------------------------------------------------- Hi all ! I'm badly stuck with a weird exception that I get when I deploy a Webservice on JBoss As 7.1.1. The Web Service itself is simple and returns in a method a List of Counters: @XmlRootElement public class Counter implements Serializable {   private Counter() {    } private Counter(int price) {            this.price = price;    } private int id; private String desc private int price; . . . .   } @WebService public class CounterWS implements CounterWSItf, Serializable { @Inject InfoService service;   @Override public  List<Counter>  getCounters() {            return service.getCounters(); } However I get the following exception once I deploy it: *Caused by: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions* *com.telco.model.Counter does not have a no-arg default constructor.* *        this problem is related to the following location:* *                at com.telco.model.Counter* *                at private java.util.List com.telco.ws.jaxws_asm.GetCounterssResponse._return* *                at com.telco.ws.jaxws_asm.GetCountersResponse*         at com.sun.xml.bind.v2.runtime.IllegalAnnotationsException$Builder.check(IllegalAnnotationsException.java:106)         at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:466)         at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:298)         at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:141)         at com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1157)         at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:145)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_31]         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_31]         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_31]         at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_31]         at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:211) [rt.jar:1.6.0_31]         at javax.xml.bind.ContextFinder.find(ContextFinder.java:392) [rt.jar:1.6.0_31]         at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:618) [rt.jar:1.6.0_31]         at org.apache.cxf.jaxb.JAXBContextCache.createContext(JAXBContextCache.java:260)         at org.apache.cxf.jaxb.JAXBContextCache.getCachedContextAndSchemas(JAXBContextCache.java:169)         at org.apache.cxf.jaxb.JAXBDataBinding.createJAXBContextAndSchemas(JAXBDataBinding.java:423)         at org.apache.cxf.jaxb.JAXBDataBinding.initialize(JAXBDataBinding.java:291)         ... 24 more As you can see, there is a default constructor in the Counter class. I've tried also removing the other constructor without success. By removing the type <Counter> from the List it actually deploys but once I invoke it from the Client, I get another type of Error, that the Counter type is unknown (!!). Is it a bug or something else I'm missing ? Thanks a lot Max -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/791939#791939] Start a new discussion in JBoss Web Services at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]